Knob



FIG. 1 is a front elevational view of knob embodying the new design thereof;

FIG. 2 is a rear elevational view thereof;

FIG. 3 is a left side elevational view thereof;

FIG. 4 is a right side elevational view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is top, rear, left perspective view thereof; and,

FIG. 7 is a bottom, rear, right perspective view thereof. 

The ornamental design for a knob, as shown and described. 